The Bass Rock in the Firth of Forth is a designated Site of Special Scientific Interest and according to David Attenborough is "one of the twelve wildlife wonders of the world" mainly due to its population of around 150,000 gannets at peak breeding time. It is also home to shags, guillemots, razorbills and a few seals.
It also hosts an (unmanned) lighthouse built in 1902 by David Stevenson. It sits in the grounds of an old castle that has served as a religious place, a home, a fortress and a prison over the years.
It lies approximately a mile off the coast of East Lothian near North Berwick. Viewed from the Fife coast it constantly changes shape and colour.